@rushstack/heft-jest-plugin integrates Jest testing into the Heft build system. This plugin simplifies Jest configuration and execution within a Rush-based monorepo. It streamlines running unit tests, integration tests, and other Jest-compatible tests by leveraging Heft's task management and dependency analysis. It provides enhanced reporting, code coverage, and allows effortless alignment of testing configurations across multiple packages in a Rush stack. Developers benefit from standardized testing workflows and a consistent development experience.